Punching fixture with side sliding blocks

Abstract

A punching fixture with side sliding blocks. The punching fixture comprises an upper die (2) and a lower die (1), wherein at least one stamping station groove for positioning a workpiece to be machined is provided on the lower die (1); a stamping double-blade assembly (13) is provided on a side surface of each stamping station groove, and each stamping double-blade assembly (13) comprises blades (132), which can move close to or away from each other; an internal support pillar (28) cooperating with the stamping station groove and configured to fix the workpiece to be machined is provided on the lower surface of the upper die (2); guide pins (12) vertically extending upwards are provided on the upper surface of the lower die (1); and guide bushings (27) adapted to the guide pins (12) are provided on the upper die (2).

Description

A punching jig with side sliders Technical Field

[0001] The utility model relates to a jig, in particular to a punching jig with a side slide block. Background Art

[0002] Among automotive parts, there is a birdcage-like part 100 (see Figure 1). Part 100 comprises a base plate 103, two opposing sidewalls 101 extending upward from base plate 103, and a loop arm 102 connecting the tops of the two sidewalls 101, forming a window below loop arm 102. During the molding process, burrs 104 form on the lower edge of loop arm 102 and base plate 103. However, due to product process requirements, burrs are not permitted at either location. Furthermore, the roundness of loop arm 102 is subject to very strict process requirements, and deformation is not permitted.

[0003] In existing technologies, the circular shape of the product makes it difficult to position, and the inner cavity of the window is prone to deformation when deburring. Manual polishing is time-consuming and has very low production efficiency. Therefore, automated deburring is often used, but it causes serious deformation of the ring arm and is difficult to meet process requirements. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art that the workpiece to be processed is easily deformed during deburring and cannot meet the product process requirements, and a punching jig with side sliders is proposed.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] A punching jig with side sliders, characterized in that: it includes an upper die and a lower die, the lower die is provided with at least one stamping station slot for positioning the workpiece to be processed, and each side of the stamping station slot is provided with a stamping blade assembly, and the stamping blade assembly includes a blade that can be relatively close or far away; the lower surface of the upper die is provided with an internal support head that cooperates with the stamping station slot and is used to fix the workpiece to be processed; the upper surface of the lower die is provided with a guide column extending vertically upward, and the upper die is provided with a guide sleeve adapted to the guide column.

[0007] Preferably, each of the punching blade assemblies further comprises a slider connected to the blade, and guide blocks are symmetrically provided on both sides of each slider, and the slider is slidably arranged in the two guide blocks.

[0008] Preferably, a pair of eight-shaped bending pins are provided on the lower surface of the upper mold, and a guide groove is provided on the slider that passes through from the upper surface downward, and the longitudinal section of the guide groove is adapted to the bending pins; when the upper mold moves downward relative to the lower mold, the bending pins are inserted downward into the corresponding guide grooves, and the slider moves closer.

[0009] Preferably, the upper mold includes a lower body and an upper pressure cover, the bottom of the upper pressure cover is provided with a downwardly extending boss, the lower body is provided with a receiving groove at a position corresponding to the boss, a spring is provided in the receiving groove, and the boss is inserted into the corresponding spring; the bent pin is fixed to the lower surface of the upper pressure cover.

[0010] Preferably, a fixing plate for positioning the bottom of the workpiece to be processed is provided in the stamping station slot.

[0011] Preferably, the lower surface of the upper mold is provided with a limiting column pointing towards the lower mold.

[0012] Preferably, the lower half of the inner support head is provided with a stripper plate, and the lower edge of the inner support head vertically passes through the upper and lower surfaces of the stripper plate. The above technical solution can achieve the following beneficial effects: the punching jig with side sliders in the utility model.

[0013] The beneficial effects of the above technical solution: The punching jig with side sliders of the utility model realizes the punching of square holes on the side of the product, solving the problem of product deformation due to external force of punching. At the same time, the punching jig has a stable and compact structure, saves space, and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the part to be processed.

[0015] FIG2 is a schematic structural diagram of a punching jig with side sliders in a preferred embodiment of the present invention.

[0016] FIG3 is a cross-sectional view of the punching jig with side sliders in FIG2 . DETAILED DESCRIPTION

[0017] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0018] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0019] As shown in Figures 2 and 3, the punching jig with side sliders of this embodiment includes an upper die 2 and a lower die 1. The lower die 1 is provided with two punching station slots for positioning the workpiece to be processed. The side of each punching station slot is provided with a punching blade assembly 13, and the punching blade assembly 13 includes a blade 132 that can be relatively close or far away. The lower surface of the upper die 2 is provided with an inner support head 28 that cooperates with the punching station slot and is used to fix the workpiece to be processed; the upper surface of the lower die 1 is provided with a guide column 12 extending vertically upward, and the upper die 2 is provided with a guide sleeve 27 adapted to the guide column 12.

[0020] Each of the punching blade assemblies 13 further includes a slider 134 connected to the blade 132. Guide blocks 131 are symmetrically provided on both sides of each slider 134, and the sliders 134 are slidably disposed within the two guide blocks 131. The upper die 2 includes a lower body 22 and an upper pressure cover 21. A downwardly extending boss is provided at the bottom of the upper pressure cover 21. A receiving groove is provided in the lower body 22 at a position corresponding to the boss. A spring 23 is disposed within the receiving groove, and the boss is inserted into the corresponding spring 23.

[0021] The lower surface of the upper pressure cover 21 is equipped with a pair of splayed bent pins 25, which extend through the upper and lower surfaces of the lower body 22. Simultaneously, the slider 134 is provided with guide slots 135 extending downward from the upper surface. The longitudinal cross-section of the guide slots 135 matches the bent pins 25, forming a splayed shape. When the upper die 2 moves downward relative to the lower die 1, the bent pins 25 slide downward into the corresponding guide slots 135, driving the slider 134 toward each other, bringing the blades 132 together and performing burr removal.

[0022] In addition, in order to further position the workpiece to be processed, a fixing plate 133 is provided in the stamping station slot for positioning the bottom of the workpiece to be processed. The fixing plate 133 cooperates with the inner support head 28 to support the entire workpiece to be processed, especially the ring arm 102 (as shown in Figure 1).

[0023] In order to prevent excessive pressure on the workpiece during the pressing process, thereby preventing deformation, a limiting column 26 pointing toward the lower die 1 is provided on the lower surface of the upper die 2 .

[0024] In addition, a stripper plate 24 is provided at the lower half of the inner support head 28 , and the lower edge of the inner support head 28 vertically passes through the upper surface and the lower surface of the stripper plate 24 .

[0025] When the punching jig with side sliders in this embodiment is used to remove burrs, the upper die 2 and the lower die 1 are closed, and the slider 134 moves horizontally inward under the action of the bent pin 25. When the unloading plate 24 of the upper die 2 presses the top of the workpiece to be processed, the inner support head 28 of the upper die 2 is inserted into the inner cavity of the upper end face of the workpiece to be processed to play a supporting role. When the limit column 26 of the upper die 2 contacts the guide block 131 of the lower die 2, the die stops moving. At this time, the sliders 134 on both sides stop moving horizontally inward under the action of the bent pin 25, completing the punching of burrs in the product frame. Through simple mechanical principles, the punches on the sliders on both sides of the lower die complete the punching of burrs in the product frame, while the inner support head 28 and the positioning plate 133 play a supporting role for the inner cavity of the upper and lower end faces of the workpiece to be processed, preventing the workpiece to be processed from being deformed by the external force of punching, thereby ensuring the size.

[0026] When the upper die 2 moves downward, the bending pin 25 is first inserted into the guide groove 135 of the slider 134. The slider 134 slides horizontally inward under the reaction force of the bending pin 25 and the restriction of the guide block 131. During this movement, the inner support head 28 of the upper die 2 is first inserted into the inner cavity of the upper end face of the workpiece to be punched to play a supporting role. Then the unloading block 24 presses the workpiece to be punched. The sequence error of this action is adjusted by the spring 23 installed in the lower body 22.

[0027] The punching jig with side sliders in this embodiment can realize the punching of square holes on the side of the product through simple mechanical principles, solving the problem of product deformation due to external force of punching. At the same time, the punching jig has a stable and compact structure, saves space, and improves production efficiency.

[0028] Although specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without adhering to the principles and essence of the present invention, but such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A punching jig with a side slider, characterized in that: It includes an upper die and a lower die, the lower die is provided with at least one stamping station slot for positioning the workpiece to be processed, and the side of each stamping station slot is provided with a stamping blade assembly, and the stamping blade assembly includes a blade that can be relatively close or far away; the lower surface of the upper die is provided with an internal support head that cooperates with the stamping station slot and is used to fix the workpiece to be processed; the upper surface of the lower die is provided with a guide column extending vertically upward, and the upper die is provided with a guide sleeve adapted to the guide column.

2. The punching jig with side sliders according to claim 1, characterized in that: Each of the punching blade components also includes a slider connected to the blade, and guide blocks are symmetrically arranged on both sides of each slider, and the slider is slidably arranged in the two guide blocks.

3. The punching jig with side sliders according to claim 2, characterized in that: A pair of figure-eight bending pins are provided on the lower surface of the upper die, and a guide groove is provided on the slider which penetrates downward from the upper surface, and the longitudinal section of the guide groove is adapted to the bending pins; when the upper die moves downward relative to the lower die, the bending pins are inserted downward into the corresponding guide grooves, and the slider moves toward each other.

4. The punching jig with side sliders according to claim 3, characterized in that: The upper mold includes a lower body and an upper pressure cover, the bottom of the upper pressure cover is provided with a downwardly extending boss, the position of the lower body corresponding to the boss is provided with a receiving groove, a spring is provided in the receiving groove, and the boss is inserted into the corresponding spring; the bent pin is fixed to the lower surface of the upper pressure cover.

5. The punching jig with side sliders according to claim 4, characterized in that: A fixing plate for positioning the bottom of the workpiece to be processed is arranged in the stamping station slot.

6. The punching jig with side sliders according to claim 5, characterized in that: The lower surface of the upper die is provided with a limiting column pointing to the lower die.

7. The punching jig with side sliders according to claim 6, characterized in that: A stripping plate is arranged at the lower half of the inner support head, and the lower edge of the inner support head vertically passes through the upper surface and the lower surface of the stripping plate.

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